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Pseudoguaianolides from the flowers of Parthenium hysterophorus
C Ramesh1, N Ravindranath, Biswanath Das
1Indian Institute of Chemical Technology, Hyderabad 500 007, India.
Phytochemistry
|October 16, 2003
Abstract:
Chemical investigation on the flowers of Parthenium hysterophorus has resulted in the isolation of four new pseudoguaianolides, hysterones A-D along with the known compounds, parthenin, coronopilin, 2beta-hydroxycoronopilin and tetraneurin-A. The structures of the new compounds were established by interpretation of their spectral (1D and 2D NMR) data. The X-ray crystallographic analysis of hysterones A and C was also carried out.
